/* roulang page: index */
:root {
            --primary: #d4232a;
            --primary-dark: #a81a1f;
            --primary-light: #e84a50;
            --accent: #d4a853;
            --accent-dark: #b8913a;
            --bg-dark: #0b0b14;
            --bg-card: #14141f;
            --bg-card-hover: #1c1c2e;
            --bg-nav: #0f0f1a;
            --text-white: #f0f0f0;
            --text-muted: #9090a8;
            --text-light: #c0c0d0;
            --border-color: #2a2a3a;
            --border-light: #3a3a4a;
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 8px 32px rgba(0,0,0,0.6);
            --shadow-sm: 0 4px 16px rgba(0,0,0,0.4);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

        body {
            font-family: var(--font-sans);
            background: var(--bg-dark);
            color: var(--text-white);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a { color: var(--accent); text-decoration: none; transition: var(--transition); }
        a:hover { color: #e8c66a; text-decoration: none; }
        img { max-width: 100%; height: auto; display: block; }
        button, input, textarea, select { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; color: var(--text-white); }

        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .container-sm { max-width: 900px; margin: 0 auto; padding: 0 24px; }

        /* ===== 顶部信息条 ===== */
        .top-bar {
            background: rgba(15,15,26,0.95);
            border-bottom: 1px solid var(--border-color);
            padding: 8px 0;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .top-bar .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
        .top-bar .domain-badge { color: var(--accent); font-weight: 600; letter-spacing: 0.5px; }
        .top-bar .top-links a { color: var(--text-muted); margin-left: 20px; transition: var(--transition); }
        .top-bar .top-links a:hover { color: var(--accent); }
        .top-bar .top-links i { margin-right: 6px; }

        /* ===== 导航 ===== */
        .navbar-main {
            background: var(--bg-nav);
            border-bottom: 2px solid var(--border-color);
            padding: 12px 0;
            position: sticky;
            top: 0;
            z-index: 1040;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .navbar-main .container { display: flex; justify-content: space-between; align-items: center; }
        .navbar-brand {
            font-size: 1.45rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .navbar-brand i { color: var(--primary); font-size: 1.6rem; }
        .navbar-brand span { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .navbar-brand:hover { color: var(--text-white); }

        .nav-links { display: flex; align-items: center; gap: 8px; }
        .nav-links a {
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            color: var(--text-light);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
        }
        .nav-links a:hover { color: var(--text-white); background: rgba(212,168,83,0.08); }
        .nav-links a.active { color: var(--accent); background: rgba(212,168,83,0.12); }
        .nav-links a.active::after { content: ''; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%); width: 20px; height: 3px; background: var(--primary); border-radius: 4px; }
        .nav-links .nav-cta {
            background: var(--primary);
            color: #fff !important;
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
        }
        .nav-links .nav-cta:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 4px 20px rgba(212,35,42,0.4); }

        .navbar-toggler {
            display: none;
            background: transparent;
            border: 1px solid var(--border-color);
            color: var(--text-white);
            padding: 8px 14px;
            border-radius: var(--radius-sm);
            font-size: 1.2rem;
            cursor: pointer;
            transition: var(--transition);
        }
        .navbar-toggler:hover { background: var(--bg-card); }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 100px 0 80px;
            background: linear-gradient(135deg, #0b0b14 0%, #1a0a0a 50%, #0b0b14 100%);
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(212,35,42,0.15) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(212,168,83,0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero .container { position: relative; z-index: 2; }
        .hero-badge {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 40px;
            background: rgba(212,168,83,0.15);
            border: 1px solid rgba(212,168,83,0.3);
            color: var(--accent);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 24px;
        }
        .hero h1 {
            font-size: 3.2rem;
            font-weight: 900;
            line-height: 1.15;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #ffffff 0%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero p {
            font-size: 1.2rem;
            color: var(--text-light);
            max-width: 640px;
            margin-bottom: 36px;
            line-height: 1.8;
        }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1.05rem;
            border: none;
            transition: var(--transition);
        }
        .btn-primary-custom:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 8px 30px rgba(212,35,42,0.5); color: #fff; }
        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 34px;
            background: transparent;
            color: var(--accent);
            border: 2px solid var(--accent);
            border-radius: var(--radius-sm);
            font-weight: 700;
            font-size: 1.05rem;
            transition: var(--transition);
        }
        .btn-outline-custom:hover { background: rgba(212,168,83,0.1); transform: translateY(-2px); color: var(--accent); }

        /* ===== 通用板块 ===== */
        .section { padding: 80px 0; }
        .section-dark { background: var(--bg-card); }
        .section-header { text-align: center; margin-bottom: 60px; }
        .section-header h2 { font-size: 2.2rem; font-weight: 800; margin-bottom: 12px; }
        .section-header h2 i { color: var(--primary); margin-right: 10px; }
        .section-header p { color: var(--text-muted); font-size: 1.05rem; max-width: 600px; margin: 0 auto; }
        .section-divider { width: 60px; height: 4px; background: linear-gradient(90deg, var(--primary), var(--accent)); border-radius: 4px; margin: 16px auto 0; }

        /* ===== 卡片 ===== */
        .card-custom {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 28px 24px;
            transition: var(--transition);
            height: 100%;
        }
        .card-custom:hover { background: var(--bg-card-hover); border-color: var(--border-light); transform: translateY(-4px); box-shadow: var(--shadow); }
        .card-custom .card-icon { width: 52px; height: 52px; border-radius: var(--radius-sm); background: rgba(212,168,83,0.1); display: flex; align-items: center; justify-content: center; font-size: 1.5rem; color: var(--accent); margin-bottom: 18px; }
        .card-custom h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 10px; }
        .card-custom p { color: var(--text-muted); font-size: 0.95rem; margin-bottom: 0; line-height: 1.6; }
        .card-custom .card-tag { display: inline-block; padding: 4px 14px; border-radius: 40px; background: rgba(212,35,42,0.1); color: var(--primary-light); font-size: 0.75rem; font-weight: 600; margin-top: 14px; }

        .card-article {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 24px;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card-article:hover { background: var(--bg-card-hover); border-color: var(--border-light); transform: translateY(-3px); box-shadow: var(--shadow); }
        .card-article .article-meta { display: flex; gap: 14px; font-size: 0.8rem; color: var(--text-muted); margin-bottom: 10px; flex-wrap: wrap; }
        .card-article .article-meta span { display: flex; align-items: center; gap: 6px; }
        .card-article .article-meta .cat { color: var(--accent); font-weight: 600; }
        .card-article h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 10px; line-height: 1.4; }
        .card-article h3 a { color: var(--text-white); }
        .card-article h3 a:hover { color: var(--accent); }
        .card-article p { color: var(--text-muted); font-size: 0.9rem; flex: 1; margin-bottom: 16px; }
        .card-article .read-more { color: var(--accent); font-weight: 600; font-size: 0.85rem; display: flex; align-items: center; gap: 6px; margin-top: auto; }

        /* ===== 分类入口 ===== */
        .cat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; }
        .cat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
        }
        .cat-card:hover { background: var(--bg-card-hover); border-color: var(--accent); transform: translateY(-6px); box-shadow: 0 12px 40px rgba(212,168,83,0.15); }
        .cat-card .cat-icon { font-size: 2.4rem; color: var(--accent); margin-bottom: 16px; }
        .cat-card h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; }
        .cat-card p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 18px; }
        .cat-card .cat-link { color: var(--primary); font-weight: 600; font-size: 0.9rem; display: inline-flex; align-items: center; gap: 6px; }
        .cat-card .cat-link:hover { color: var(--primary-light); }

        /* ===== 数据统计 ===== */
        .stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 24px; }
        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: var(--bg-card);
            border-radius: var(--radius);
            border: 1px solid var(--border-color);
            transition: var(--transition);
        }
        .stat-item:hover { border-color: var(--accent); background: var(--bg-card-hover); }
        .stat-number { font-size: 2.6rem; font-weight: 900; color: var(--accent); line-height: 1.2; }
        .stat-label { color: var(--text-muted); font-size: 0.95rem; margin-top: 8px; }

        /* ===== 流程步骤 ===== */
        .steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 32px; counter-reset: step; }
        .step-item {
            text-align: center;
            padding: 32px 16px;
            position: relative;
        }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin: 0 auto 18px;
        }
        .step-item h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
        .step-item p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 0; }

        /* ===== FAQ ===== */
        .faq-list { max-width: 800px; margin: 0 auto; }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            padding: 0;
            transition: var(--transition);
        }
        .faq-item:hover { border-color: var(--border-light); }
        .faq-question {
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-white);
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question i { color: var(--accent); transition: var(--transition); font-size: 0.9rem; }
        .faq-question[aria-expanded="true"] i { transform: rotate(180deg); }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-muted);
            font-size: 0.95rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, #14141f 0%, #1a0a0a 100%);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            text-align: center;
            padding: 80px 0;
        }
        .cta-section h2 { font-size: 2.2rem; font-weight: 800; margin-bottom: 16px; }
        .cta-section p { color: var(--text-muted); max-width: 560px; margin: 0 auto 32px; font-size: 1.05rem; }
        .cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

        /* ===== 页脚 ===== */
        .footer {
            background: #08080f;
            border-top: 1px solid var(--border-color);
            padding: 48px 0 32px;
        }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .footer-brand h3 { font-size: 1.3rem; font-weight: 800; margin-bottom: 12px; }
        .footer-brand h3 i { color: var(--primary); margin-right: 8px; }
        .footer-brand h3 span { background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .footer-brand p { color: var(--text-muted); font-size: 0.9rem; max-width: 300px; }
        .footer-col h4 { font-size: 1rem; font-weight: 700; margin-bottom: 16px; color: var(--text-white); }
        .footer-col a { display: block; color: var(--text-muted); font-size: 0.9rem; padding: 4px 0; transition: var(--transition); }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-bottom { border-top: 1px solid var(--border-color); padding-top: 24px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; font-size: 0.85rem; color: var(--text-muted); }
        .footer-bottom a { color: var(--text-muted); }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== 文章页专属 ===== */
        .article-hero { padding: 60px 0 40px; background: linear-gradient(135deg, #0b0b14, #1a0a0a); }
        .article-hero h1 { font-size: 2.4rem; font-weight: 900; line-height: 1.25; margin-bottom: 16px; }
        .article-hero .meta { display: flex; gap: 20px; color: var(--text-muted); font-size: 0.9rem; flex-wrap: wrap; }
        .article-hero .meta span { display: flex; align-items: center; gap: 6px; }
        .article-body { padding: 40px 0 60px; }
        .article-body .content { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius); padding: 40px; font-size: 1.05rem; color: var(--text-light); line-height: 1.9; }
        .article-body .content h2, .article-body .content h3 { color: var(--text-white); margin-top: 32px; margin-bottom: 16px; }
        .article-body .content p { margin-bottom: 18px; }
        .article-body .content img { border-radius: var(--radius-sm); margin: 24px 0; }
        .article-body .content a { color: var(--accent); }
        .article-body .content a:hover { text-decoration: underline; }
        .article-body .content blockquote { border-left: 4px solid var(--primary); padding: 16px 24px; background: rgba(212,35,42,0.05); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin: 24px 0; }
        .article-body .back-link { display: inline-flex; align-items: center; gap: 8px; color: var(--text-muted); font-size: 0.95rem; margin-bottom: 24px; transition: var(--transition); }
        .article-body .back-link:hover { color: var(--accent); }

        /* ===== 分类页专属 ===== */
        .category-hero { padding: 60px 0 40px; background: linear-gradient(135deg, #0b0b14, #1a0a0a); }
        .category-hero h1 { font-size: 2.4rem; font-weight: 900; margin-bottom: 12px; }
        .category-hero p { color: var(--text-muted); font-size: 1.05rem; max-width: 600px; }
        .category-list { padding: 40px 0 60px; }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero h1 { font-size: 2.6rem; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
        }
        @media (max-width: 768px) {
            .navbar-toggler { display: block; }
            .nav-links { display: none; flex-direction: column; width: 100%; padding-top: 16px; gap: 4px; }
            .nav-links.open { display: flex; }
            .nav-links a { width: 100%; padding: 12px 16px; border-radius: var(--radius-sm); }
            .nav-links a.active::after { display: none; }
            .navbar-main .container { flex-wrap: wrap; }
            .hero { padding: 60px 0 50px; }
            .hero h1 { font-size: 2rem; }
            .hero p { font-size: 1rem; }
            .section { padding: 50px 0; }
            .section-header h2 { font-size: 1.6rem; }
            .stats-grid { grid-template-columns: repeat(2, 1fr); }
            .steps { grid-template-columns: 1fr 1fr; gap: 20px; }
            .cta-section h2 { font-size: 1.6rem; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .article-hero h1 { font-size: 1.6rem; }
            .article-body .content { padding: 24px 20px; }
            .category-hero h1 { font-size: 1.6rem; }
            .top-bar .top-links a { margin-left: 12px; font-size: 0.75rem; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .hero h1 { font-size: 1.6rem; }
            .hero-actions { flex-direction: column; }
            .btn-primary-custom, .btn-outline-custom { width: 100%; justify-content: center; }
            .stats-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
            .stat-number { font-size: 2rem; }
            .steps { grid-template-columns: 1fr; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .cat-grid { grid-template-columns: 1fr; }
            .top-bar .container { flex-direction: column; text-align: center; }
            .top-bar .top-links { display: flex; flex-wrap: wrap; justify-content: center; }
            .top-bar .top-links a { margin: 4px 8px; }
        }

        /* ===== 工具类 ===== */
        .text-accent { color: var(--accent); }
        .text-primary-custom { color: var(--primary); }
        .bg-card-custom { background: var(--bg-card); }
        .mt-2 { margin-top: 20px; }
        .mb-2 { margin-bottom: 20px; }
        .gap-2 { gap: 20px; }
        .fade-in { animation: fadeIn 0.6s ease forwards; }
        @keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

        /* 文章不可用状态 */
        .not-found-box { text-align: center; padding: 80px 24px; background: var(--bg-card); border-radius: var(--radius); border: 1px solid var(--border-color); }
        .not-found-box i { font-size: 3rem; color: var(--text-muted); margin-bottom: 20px; }
        .not-found-box h2 { font-size: 1.6rem; margin-bottom: 12px; }
        .not-found-box p { color: var(--text-muted); margin-bottom: 24px; }

/* roulang page: article */
:root {
            --primary: #c0392b;
            --primary-dark: #a93226;
            --primary-light: #e74c3c;
            --secondary: #1a1a2e;
            --accent: #f39c12;
            --bg-dark: #0f0f1a;
            --bg-card: #1a1a2e;
            --bg-body: #0a0a14;
            --text-light: #f1f1f1;
            --text-muted: #9b9bb0;
            --text-soft: #c8c8d8;
            --border-color: rgba(255, 255, 255, 0.08);
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 20px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
            --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.3);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            --container-max: 1200px;
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

        html { scroll-behavior: smooth; }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-body);
            color: var(--text-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent); }

        img { max-width: 100%; height: auto; display: block; border-radius: var(--radius-sm); }

        .container { max-width: var(--container-max); margin: 0 auto; padding: 0 20px; width: 100%; }

        /* ===== Header / Top Bar ===== */
        .top-bar {
            background: rgba(15, 15, 26, 0.95);
            border-bottom: 1px solid var(--border-color);
            padding: 6px 0;
            font-size: 0.8rem;
            color: var(--text-muted);
            backdrop-filter: blur(12px);
        }
        .top-bar .container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
        .top-bar a { color: var(--text-muted); margin: 0 10px 0 0; }
        .top-bar a:hover { color: var(--primary-light); }
        .top-bar .top-right { display: flex; align-items: center; gap: 16px; }
        .top-bar .top-right i { margin-right: 4px; }

        /* ===== Navbar ===== */
        .navbar-main {
            background: rgba(10, 10, 20, 0.98);
            border-bottom: 2px solid rgba(192, 57, 43, 0.3);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            backdrop-filter: blur(16px);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.6);
        }
        .navbar-main .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 0;
            padding-bottom: 0;
            min-height: 68px;
        }
        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--text-light);
            letter-spacing: -0.5px;
            text-transform: uppercase;
            padding: 8px 0;
        }
        .navbar-brand i { color: var(--primary-light); font-size: 1.7rem; filter: drop-shadow(0 0 8px rgba(231, 76, 60, 0.4)); }
        .navbar-brand span { background: linear-gradient(135deg, #f1f1f1, #c8c8d8); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .navbar-brand:hover { color: var(--text-light); transform: scale(1.02); }
        .navbar-toggler {
            background: transparent;
            border: 1px solid var(--border-color);
            color: var(--text-light);
            font-size: 1.4rem;
            padding: 6px 14px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            display: none;
            transition: var(--transition);
        }
        .navbar-toggler:hover { background: rgba(255,255,255,0.05); border-color: var(--primary-light); }
        .nav-links { display: flex; align-items: center; gap: 6px; }
        .nav-links a {
            color: var(--text-soft);
            padding: 10px 18px;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--primary-light);
            border-radius: 2px;
            transition: var(--transition);
        }
        .nav-links a:hover { color: #fff; background: rgba(255,255,255,0.04); }
        .nav-links a:hover::after { transform: translateX(-50%) scaleX(1); }
        .nav-links a.active { color: #fff; background: rgba(192,57,43,0.15); }
        .nav-links a.active::after { transform: translateX(-50%) scaleX(1); }
        .nav-links a.nav-cta {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff !important;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            box-shadow: 0 4px 20px rgba(192,57,43,0.35);
            margin-left: 8px;
        }
        .nav-links a.nav-cta i { margin-right: 6px; }
        .nav-links a.nav-cta::after { display: none; }
        .nav-links a.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(192,57,43,0.5); background: linear-gradient(135deg, var(--primary-light), var(--primary)); }

        /* ===== Hero / Page Header ===== */
        .page-hero {
            background: linear-gradient(135deg, rgba(15,15,26,0.95), rgba(26,26,46,0.9)), url('data:image/svg+xml,%3Csvg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 800 600%22%3E%3Crect fill=%22%231a1a2e%22 width=%22800%22 height=%22600%22/%3E%3Ccircle fill=%22%23c0392b%22 opacity=%220.08%22 cx=%22400%22 cy=%22300%22 r=%22280%22/%3E%3Ccircle fill=%22%23f39c12%22 opacity=%220.05%22 cx=%22600%22 cy=%22200%22 r=%22200%22/%3E%3C/svg%3E') center/cover no-repeat;
            padding: 60px 0 50px;
            border-bottom: 2px solid var(--border-color);
            text-align: center;
        }
        .page-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #fff 60%, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 12px;
        }
        .page-hero .breadcrumb-custom {
            color: var(--text-muted);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .page-hero .breadcrumb-custom a { color: var(--text-soft); }
        .page-hero .breadcrumb-custom a:hover { color: var(--primary-light); }
        .page-hero .breadcrumb-custom span { color: var(--text-muted); }
        .page-hero .breadcrumb-custom i { color: var(--primary-light); font-size: 0.7rem; }

        /* ===== Article Main ===== */
        .article-main {
            padding: 60px 0 80px;
        }
        .article-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 40px 48px;
            box-shadow: var(--shadow);
            max-width: 900px;
            margin: 0 auto;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px 30px;
            margin-bottom: 30px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border-color);
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .article-meta .meta-item { display: flex; align-items: center; gap: 8px; }
        .article-meta .meta-item i { color: var(--primary-light); width: 16px; text-align: center; }
        .article-meta .badge-cat {
            display: inline-block;
            background: rgba(192,57,43,0.2);
            color: var(--primary-light);
            padding: 2px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            border: 1px solid rgba(192,57,43,0.3);
        }
        .article-body {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text-soft);
        }
        .article-body p { margin-bottom: 1.4em; }
        .article-body h2, .article-body h3, .article-body h4 {
            color: #fff;
            margin-top: 1.8em;
            margin-bottom: 0.8em;
            font-weight: 700;
            letter-spacing: -0.3px;
        }
        .article-body h2 { font-size: 1.7rem; border-left: 4px solid var(--primary-light); padding-left: 16px; }
        .article-body h3 { font-size: 1.35rem; }
        .article-body ul, .article-body ol { padding-left: 24px; margin-bottom: 1.4em; }
        .article-body li { margin-bottom: 0.5em; }
        .article-body img { border-radius: var(--radius); margin: 24px 0; box-shadow: var(--shadow-sm); }
        .article-body blockquote {
            border-left: 4px solid var(--primary-light);
            background: rgba(192,57,43,0.08);
            padding: 16px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 24px 0;
            color: var(--text-soft);
            font-style: italic;
        }
        .article-body a { color: var(--primary-light); text-decoration: underline; text-underline-offset: 3px; }
        .article-body a:hover { color: var(--accent); }
        .article-footer-nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-color);
        }
        .article-footer-nav .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            background: rgba(255,255,255,0.05);
            border: 1px solid var(--border-color);
            border-radius: 50px;
            color: var(--text-soft);
            font-weight: 500;
            transition: var(--transition);
        }
        .article-footer-nav .btn-back:hover { background: rgba(255,255,255,0.1); color: #fff; border-color: var(--primary-light); transform: translateX(-4px); }
        .article-footer-nav .btn-share {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 28px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border: none;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(192,57,43,0.3);
        }
        .article-footer-nav .btn-share:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(192,57,43,0.5); }

        /* ===== Not Found ===== */
        .not-found-box {
            text-align: center;
            padding: 80px 20px;
        }
        .not-found-box i { font-size: 4rem; color: var(--text-muted); margin-bottom: 20px; display: block; }
        .not-found-box h2 { font-size: 2rem; font-weight: 700; margin-bottom: 12px; color: #fff; }
        .not-found-box p { color: var(--text-muted); font-size: 1.1rem; margin-bottom: 24px; }
        .not-found-box .btn-home {
            display: inline-block;
            padding: 12px 36px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }
        .not-found-box .btn-home:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(192,57,43,0.4); }

        /* ===== Related / More ===== */
        .related-section {
            margin-top: 60px;
        }
        .related-section h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 24px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-section h3 i { color: var(--primary-light); }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 20px;
        }
        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 20px 24px;
            transition: var(--transition);
        }
        .related-card:hover { border-color: rgba(192,57,43,0.3); transform: translateY(-4px); box-shadow: var(--shadow-sm); }
        .related-card .rc-cat {
            font-size: 0.75rem;
            color: var(--primary-light);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 6px;
        }
        .related-card .rc-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .rc-title:hover { color: var(--primary-light); }
        .related-card .rc-date { font-size: 0.8rem; color: var(--text-muted); }

        /* ===== Footer ===== */
        .footer {
            background: rgba(10, 10, 20, 0.98);
            border-top: 2px solid rgba(192, 57, 43, 0.2);
            padding: 60px 0 30px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand h3 { font-size: 1.4rem; font-weight: 800; color: #fff; display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
        .footer-brand h3 i { color: var(--primary-light); }
        .footer-brand p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.7; max-width: 320px; }
        .footer-col h4 { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 18px; letter-spacing: 0.5px; }
        .footer-col a { display: block; color: var(--text-muted); font-size: 0.9rem; padding: 6px 0; transition: var(--transition); }
        .footer-col a:hover { color: var(--primary-light); transform: translateX(4px); }
        .footer-col a i { width: 20px; margin-right: 4px; color: var(--primary-light); }
        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a { color: var(--text-soft); }
        .footer-bottom a:hover { color: var(--primary-light); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .article-card { padding: 32px 28px; }
        }
        @media (max-width: 768px) {
            .navbar-toggler { display: block; }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: rgba(10,10,20,0.98);
                border-top: 1px solid var(--border-color);
                padding: 16px 0 20px;
                gap: 4px;
            }
            .nav-links.show { display: flex; }
            .nav-links a { padding: 12px 20px; width: 100%; text-align: left; }
            .nav-links a::after { display: none; }
            .nav-links a.nav-cta { margin-left: 0; text-align: center; border-radius: var(--radius-sm); }
            .page-hero h1 { font-size: 1.8rem; }
            .page-hero { padding: 40px 0 30px; }
            .article-card { padding: 24px 18px; border-radius: var(--radius); }
            .article-meta { gap: 12px 20px; font-size: 0.85rem; }
            .article-body { font-size: 0.98rem; }
            .article-body h2 { font-size: 1.3rem; }
            .article-footer-nav { flex-direction: column; align-items: stretch; }
            .article-footer-nav .btn-back, .article-footer-nav .btn-share { justify-content: center; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .related-grid { grid-template-columns: 1fr; }
        }
        @media (max-width: 520px) {
            .top-bar .container { flex-direction: column; align-items: center; text-align: center; gap: 4px; }
            .navbar-brand { font-size: 1.2rem; }
            .navbar-brand i { font-size: 1.3rem; }
            .page-hero h1 { font-size: 1.4rem; }
            .article-card { padding: 18px 14px; }
            .article-meta { flex-direction: column; gap: 8px; }
            .not-found-box i { font-size: 2.8rem; }
            .not-found-box h2 { font-size: 1.4rem; }
        }

        /* ===== Misc Utilities ===== */
        .text-gradient { background: linear-gradient(135deg, #fff, var(--primary-light)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .mt-2 { margin-top: 20px; }
        .mb-2 { margin-bottom: 20px; }

/* roulang page: category1 */
/* ===== Design Variables ===== */
        :root {
            --primary: #e63946;
            --primary-dark: #c1121f;
            --primary-light: #f1faee;
            --secondary: #1d3557;
            --secondary-light: #457b9d;
            --accent: #f4a261;
            --dark: #0b1a2e;
            --darker: #060f1a;
            --bg-body: #0f1e32;
            --bg-card: #162a45;
            --bg-card-hover: #1c3355;
            --text-light: #f1faee;
            --text-muted: #a8c4d8;
            --text-weak: #6d8ea6;
            --border-color: #2a4a6a;
            --border-light: rgba(69, 123, 157, 0.3);
            --radius: 16px;
            --radius-sm: 10px;
            --radius-lg: 24px;
            --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-hover: 0 16px 48px rgba(0, 0, 0, 0.6);
            --transition: all 0.3s ease;
            --font-sans: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }

        /* ===== Reset & Base ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-body);
            color: var(--text-light);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--secondary-light);
            text-decoration: none;
            transition: var(--transition);
        }
        a:hover {
            color: var(--accent);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }

        /* ===== Container ===== */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== Header / Navbar ===== */
        .navbar-main {
            background: rgba(11, 26, 46, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: var(--transition);
        }

        .navbar-main .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 70px;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-light);
            text-decoration: none;
            transition: var(--transition);
        }
        .navbar-brand i {
            color: var(--primary);
            font-size: 1.8rem;
        }
        .navbar-brand span {
            background: linear-gradient(135deg, #f1faee, var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .navbar-brand:hover {
            opacity: 0.9;
            transform: scale(1.02);
        }

        .navbar-toggler {
            display: none;
            background: none;
            border: 1px solid var(--border-light);
            color: var(--text-light);
            font-size: 1.5rem;
            padding: 6px 12px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
        }
        .navbar-toggler:hover {
            background: rgba(255, 255, 255, 0.05);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            color: var(--text-muted);
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
            text-decoration: none;
        }
        .nav-links a:hover {
            color: var(--text-light);
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-links a.active {
            color: var(--text-light);
            background: rgba(230, 57, 70, 0.2);
            border: 1px solid rgba(230, 57, 70, 0.3);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 30px;
            height: 3px;
            background: var(--primary);
            border-radius: 4px;
        }
        .nav-links a.nav-cta {
            background: var(--primary);
            color: #fff;
            padding: 8px 22px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 6px;
            border: none;
        }
        .nav-links a.nav-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(230, 57, 70, 0.4);
        }

        /* ===== Hero Section ===== */
        .hero-guide {
            padding: 80px 0 60px;
            background: linear-gradient(165deg, var(--darker) 0%, var(--secondary) 100%);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-light);
        }
        .hero-guide::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(230, 57, 70, 0.15), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-guide::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(69, 123, 157, 0.12), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-guide .container {
            position: relative;
            z-index: 1;
        }
        .hero-guide h1 {
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 16px;
            background: linear-gradient(135deg, #f1faee, var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-guide p {
            font-size: 1.2rem;
            color: var(--text-muted);
            max-width: 680px;
            margin-bottom: 32px;
        }
        .hero-guide .hero-stats {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
        }
        .hero-guide .hero-stat {
            text-align: center;
        }
        .hero-guide .hero-stat .num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent);
            display: block;
        }
        .hero-guide .hero-stat .label {
            font-size: 0.9rem;
            color: var(--text-weak);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* ===== Section Common ===== */
        .section-guide {
            padding: 70px 0;
        }
        .section-guide .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-light);
        }
        .section-guide .section-sub {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 640px;
            margin-bottom: 40px;
        }
        .section-guide .section-title i {
            color: var(--primary);
            margin-right: 10px;
        }

        /* ===== Category Cards ===== */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 28px;
        }
        .category-card {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 32px 24px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--primary);
            border-radius: 0 4px 4px 0;
            opacity: 0;
            transition: var(--transition);
        }
        .category-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(230, 57, 70, 0.3);
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }
        .category-card:hover::before {
            opacity: 1;
        }
        .category-card .card-icon {
            font-size: 2.4rem;
            color: var(--primary);
            margin-bottom: 16px;
        }
        .category-card h3 {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-light);
        }
        .category-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 18px;
        }
        .category-card .badge-list {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }
        .category-card .badge-list .badge {
            background: rgba(69, 123, 157, 0.2);
            color: var(--secondary-light);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            border: 1px solid rgba(69, 123, 157, 0.2);
        }
        .category-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent);
            font-weight: 600;
            margin-top: 6px;
            transition: var(--transition);
        }
        .category-card .card-link:hover {
            gap: 12px;
            color: var(--primary);
        }

        /* ===== Process / Timeline ===== */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 24px;
            counter-reset: step;
        }
        .process-step {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 28px 20px;
            text-align: center;
            transition: var(--transition);
            position: relative;
        }
        .process-step:hover {
            background: var(--bg-card-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }
        .process-step .step-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: rgba(230, 57, 70, 0.25);
            display: block;
            margin-bottom: 8px;
        }
        .process-step h4 {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 8px;
        }
        .process-step p {
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .process-step .step-icon {
            font-size: 2rem;
            color: var(--accent);
            margin-bottom: 12px;
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(230, 57, 70, 0.2);
        }
        .faq-question {
            padding: 18px 24px;
            font-weight: 600;
            color: var(--text-light);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-size: 1rem;
        }
        .faq-question i {
            transition: var(--transition);
            color: var(--primary);
            font-size: 1.1rem;
        }
        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
        }
        .faq-answer {
            padding: 0 24px 18px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-answer.show {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-guide {
            background: linear-gradient(135deg, var(--secondary), var(--dark));
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            border: 1px solid var(--border-light);
            position: relative;
            overflow: hidden;
        }
        .cta-guide::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(230, 57, 70, 0.12), transparent);
            border-radius: 50%;
        }
        .cta-guide h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-guide p {
            color: var(--text-muted);
            max-width: 520px;
            margin: 0 auto 28px;
            font-size: 1.05rem;
        }
        .cta-guide .btn-cta {
            background: var(--primary);
            color: #fff;
            padding: 14px 40px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 1.05rem;
            border: none;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }
        .cta-guide .btn-cta:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(230, 57, 70, 0.4);
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--darker);
            border-top: 1px solid var(--border-light);
            padding: 60px 0 30px;
            margin-top: 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-light);
        }
        .footer-brand h3 i {
            color: var(--primary);
        }
        .footer-brand h3 span {
            background: linear-gradient(135deg, #f1faee, var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .footer-brand p {
            color: var(--text-weak);
            font-size: 0.95rem;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            color: var(--text-weak);
            padding: 4px 0;
            font-size: 0.92rem;
            transition: var(--transition);
            text-decoration: none;
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 6px;
        }
        .footer-col a i {
            margin-right: 8px;
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-light);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            color: var(--text-weak);
            font-size: 0.85rem;
        }
        .footer-bottom a {
            color: var(--secondary-light);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== Mobile Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .hero-guide h1 {
                font-size: 2.4rem;
            }
        }

        @media (max-width: 768px) {
            .navbar-toggler {
                display: block;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                background: rgba(11, 26, 46, 0.98);
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                padding: 20px;
                border-bottom: 1px solid var(--border-light);
                gap: 6px;
                align-items: stretch;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 12px 16px;
                text-align: center;
            }
            .nav-links a.active::after {
                display: none;
            }
            .nav-links a.nav-cta {
                justify-content: center;
            }
            .hero-guide {
                padding: 60px 0 40px;
            }
            .hero-guide h1 {
                font-size: 2rem;
            }
            .hero-guide p {
                font-size: 1rem;
            }
            .hero-guide .hero-stats {
                gap: 24px;
                justify-content: center;
            }
            .section-guide {
                padding: 50px 0;
            }
            .section-guide .section-title {
                font-size: 1.7rem;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .process-steps {
                grid-template-columns: 1fr 1fr;
            }
            .cta-guide {
                padding: 36px 20px;
            }
            .cta-guide h2 {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .hero-guide h1 {
                font-size: 1.6rem;
            }
            .hero-guide .hero-stats {
                flex-direction: column;
                align-items: center;
                gap: 16px;
            }
            .process-steps {
                grid-template-columns: 1fr;
            }
            .section-guide .section-title {
                font-size: 1.4rem;
            }
            .category-card {
                padding: 24px 18px;
            }
            .cta-guide .btn-cta {
                width: 100%;
                justify-content: center;
            }
        }